Get the power to clear clogs with Liquid-Plumr Industrial Strength Gel. The thick, two-in-one formula is made to destroy hair and grease. Whether your drain is fully blocked or slow-running, Industrial Strength Gel restores a clean, clear flow—even clogs caused by soap scum don’t stand a chance. This drain cleaner works effectively throughout your home, in showers, tubs, bathroom sinks, kitchen sinks and garbage disposals. With regular use, it also helps keep drains free of buildup and helps prevent future clogs. Industrial Strength Gel is safe for all septic systems, garbage disposals and pipes, including PVC, plastic, copper and old pipes. Do not use with a plunger, in toilets or with ammonia, toilet bowl cleaners or non-Liquid-Plumr clog removers (to avoid hazardous gas). It contains biodegradable surfactants and no phosphorous. Excessive heat or cold may cause Liquid-Plumr to form clumps, but this should not affect its performance.